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import init, { make_vm } from './wasm/automathon.js';
function wordlistElts(wordlist) {
return wordlist.map((bc, i) => {
const bcElt = document.createElement('x-bytecode');
bcElt.setAttribute('x-index', i);
for (let i = 0; i < bc.len(); i++) {
const opElt = document.createElement('x-op');
opElt.setAttribute('x-index', i);
opElt.textContent = bc.at(i);
bcElt.appendChild(opElt);
}
return bcElt;
})
}
function selectorForIP(word, offset) {
return `#wordlist x-bytecode[x-index='${word}'] x-op[x-index='${offset}']`;
}
function initWordlist() {
const sel = selectorForIP(0, 0);
document.querySelectorAll(sel).forEach(e => {
e.classList.add('ip')
});
}
function renderStack(vm) {
document.querySelectorAll('#stack').forEach(e => {
while (e.lastChild) {
e.removeChild(e.lastChild);
}
vm.stack().reverse()
.forEach(datum => {
const elt = document.createElement('li');
elt.textContent = datum;
e.appendChild(elt);
return elt;
});
});
}
function renderCallStack(vm) {
document.querySelectorAll('#callstack').forEach(e => {
while (e.lastChild) {
e.removeChild(e.lastChild);
}
vm.callstack().reverse()
.forEach(datum => {
const elt = document.createElement('li');
elt.textContent = `${datum.word}@${datum.offset}`;
e.appendChild(elt);
return elt;
});
});
}
const highRange = new Range();
const highlight = new Highlight(highRange);
CSS.highlights.set('exec', highlight);
function renderTextHighlight(vm) {
const ip = vm.ip();
const anno = vm.annotation_at(ip)
const src = document.querySelector('#src');
// this assumes the text node is the first child, maybe it isn't?
highRange.setStart(src.childNodes[0], anno.start);
highRange.setEnd(src.childNodes[0], anno.end);
}
function tick(vm) {
if (!vm.tick()) {
vm.reset_ip();
}
const { word, offset } = vm.ip();
document.querySelectorAll('#wordlist .ip').forEach(e => e.classList.remove('ip'));
const sel = selectorForIP(word, offset);
document.querySelectorAll(sel).forEach(e => {
e.classList.add('ip');
});
renderStack(vm);
renderCallStack(vm);
renderTextHighlight(vm);
}
async function loaded() {
console.debug('running init');
const mod = await init();
console.debug('init done', mod);
const vm = make_vm();
document.querySelector('#compile').onclick = e => {
console.debug('compile clicked', e);
let wordlistContainer = document.querySelector('#wordlist');
while (wordlistContainer.lastChild) {
console.debug('removing child', wordlistContainer.lastChild)
wordlistContainer.removeChild(wordlistContainer.lastChild);
}
// always add a newline until i decide what to do with the parser.
const text = document.querySelector('#src').textContent + '\n';
console.debug('compiling', text);
const start = performance.now();
const res = vm.compile(text);
const end = performance.now();
console.info(`compile took ${end-start} ms`);
if (res) {
const wordlist = wordlistElts(vm.wordlist());
wordlist.forEach(elt => wordlistContainer.appendChild(elt));
initWordlist();
renderStack(vm);
renderCallStack(vm);
renderTextHighlight(vm);
}
};
document.querySelector('#tick').onclick = e => {
console.debug('tick clicked', e);
tick(vm);
};
document.querySelector('#bench').onclick = e => {
console.debug('bench clicked', e);
const start = performance.now();
let tickCount = 0;
for (let i = 0; i < 1_000_000; i++) {
tickCount += vm.run();
}
const end = performance.now();
console.info(`run took ${end-start} ms for ${tickCount} ticks (${(end-start)/tickCount * 1_000_000} ns/tick).`);
console.info('result', vm.stack());
};
let blinkenRun = false;
document.querySelector('#blinken').onclick = e => {
console.debug('blinken clicked', e);
blinkenRun = !blinkenRun;
if (blinkenRun) {
e.target.textContent = 'haltenblinken';
} else {
e.target.textContent = 'blinken';
}
const frameRate = 6;
const onTimeout = _ => {
if (blinkenRun) {
tick(vm);
setTimeout(onTimeout, 1_000 / frameRate);
}
}
setTimeout(onTimeout);
}
window.vm = vm;
}
document.addEventListener('DOMContentLoaded', loaded);
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